DE1462843A1 - Photographic camera device - Google Patents

Description

The invention relates to a photographic camera device for obtaining a monochromatic photographic film on which part information is recorded, and particularly a photographic monochromatic film for use when broadcasting on television.

It is known to use so-called color films for reproducing color images in a television transmitter. However, it is also known that the color film is very expensive and its development requires rather complicated processes by comparison with the sk monochromatic film.

A main aim of the invention is therefore a novel photo-

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graphic camera device capable of one to provide coloring information to the monochromatic PiIm.

Another object of the invention is a photographic one Camera in which stripe images or stripe oscillograms

with (stripe patterns) mitxxexsaliieiBHBmxießkafesiaÄiixlsiiSÄX different Division depending on the main color components of an object to be watched on a monochromatic film can be recorded simultaneously with the recording of your image of the object, so that you get a monochromatic one photographic film contains information and coloring a picture of the item to be watched is included.

Another object of the invention is a photographic camera in which stripe images or oscillograms (stripe patterns)

different division that

correspond to at least three main color components of an object to be viewed on a monochromatic film can be recorded simultaneously with the recording of the subject, so that one can use a photographic film for television broadcasts

Briefly, the invention relates to a photographic camera having a filter made up of one or more filter components each of which has more than two types of band filter elements

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contains elements, which are arranged alternately one after the other wherein one type of the bandpass filter elements can transmit light of virtually any color, and each of the other of the bandpass filter elements is able to intercept or receive light of a color different from that which are cut off from the other belt filter elements were, the filter is arranged in the Liohtbahn at such a point that it is optically close to the sensitive Surface of a monochromatic film adheres or at an equivalent point.

Other objects, features and advantages of the invention will become clear from the following description of an exemplary embodiment with reference to the drawing, in which

Fig. 1 schematically shows an example of a photographic one Shows camera device according to the invention.

2A and 2B show one in the invention, respectively filter component used.

Fig. 3 is a block diagram showing an example of an apparatus for generating a color signal according to the invention.

FIG. 4 shows the frequency characteristics of the filters used according to FIG. 3.

Fig. 5 shows a similar frequency characteristic of the filters, However, these partially overlap.

Fig. 6 is a block diagram showing another one

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Example of a device for generating color signals according to the invention.

Figs. 7A and 7B show waveforms of currents used in the example of Fig. 6;

Figs. 8A and 8B are diagrams for explaining the example of Fig. 6;

Fig. 9 is a block diagram showing yet another exemplary embodiment of the means for generating of color signals according to the invention.

Fig. 10 is a block diagram similar to that of Fig. 9 showing another example of the apparatus for Generation of color signals according to the invention.

Fig. 11 schematically shows a further embodiment of the photographic camera device according to the invention.

Fig. 12 shows another example of a filter used in the photographic camera system of the invention.

Fig. 13 shows in block form an embodiment of the device for generating color signals in which the filter 12 is used.

Flg. 14 schematically shows an output waveform generated in the embodiment of FIG.

Figs. 15 4 to D are waveforms, where A is a waveform shows, which are obtained from the embodiment of FIG. 13, and B, C and Ό represent gate pulses.

16A and 16B show filters for explaining the invention.

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Pig. Fig. 17 is a block diagram showing another example of the color signal generating device according to the invention.

FIG. 13 shows frequency characteristics of filters used in the embodiment of FIG.

As is known, the reproduction of light requires different Colors Light of at least three colors or the so-called three main colors. To facilitate understanding of the invention, a description is given below in conjunction with the reproduction of colored light given by an object that is to be watched television, the so-called three main colors to be mixed.

Fig. 1 shows an example of the green structure of a photographic camera according to the invention. It's 101 a television object, 102 an objective lens, 103 an optical filter with filter components 103a and 103b that in turn consist of band filter elements, the optical filter being arranged in a focusing plane on which the Object 101 is focused into an image by the objective lens 102. Hit 104 is a relay lens called the an unexposed monochromatic film projects the real image that has been focused on the plane of focus. For the sake of clarity, an iris diaphragm, a

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film feeder, etc. have been omitted because they are used for Explanation of the principles of the invention are not necessary. In addition, the camera mentioned here also includes cameras for moving and still images. The unexposed monochromatic film 105 is exposed and then the necessary procedures subjected, whereupon he with the help of suitable, later to be described devices on a television transmission device is projected, the circuit of which is a feature of the invention.

The optical filter 103 is composed of the filter components 103a and 103b, each of which is constructed as shown in FIG. shown. That is, the filter component 103a has two types of bandpass filter elements W and R which are alternate and sequential are arranged in the longitudinal direction, the band filter elements W light of practically all wavelengths of the visible Can transmit rays, and the band filter elements R are able to emit a certain colored light, e.g. red, to catch. The width of the filter elements W and R can be selected as desired. The total width of a pair of adjacent ones Bandpass filter elements W and R are referred to as a "pitch" in this specification. The arrangement and the division the band filter elements W and R of the optical filter component 103a are chosen so that when the image of the object 101 on the film 105 is transferred to a photoelectric conversion device is projected, the stripe pattern

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of the filter component 103a cross the horizontal scanning direction h of the photoelectric conversion device, so that video signals having a carrier frequency f _{R are} generated. The filter component 103b has two types of bandpass filter _{elements ¥ and B 1} which are arranged alternately and sequentially in a manner similar to the aforementioned elements W and R, the bandpass filter elements Y being the same as those mentioned above, while the bandpass filter elements B in layer are to intercept or absorb light of a certain color, for example blue, which differs from the color that was cut off by the band filter elements R. The arrangement and the pitch of these band filter elements W and B are chosen so that, when the image of the object 101 on the film 105 is projected onto the photoelectric conversion device, the stripe pattern of the filter component 103b corresponds to the horizontal scanning direction h of the piezoelectric conversion device can overlap to generate video signals with a carrier frequency f _B.

With such an arrangement, when the object 101 has been focused into an image on the filter 103 through the objective lens 102, the feed component 103a only separates out the red light, the sound is emitted to the object 101, in such a stripe image that the video signal with of the frequency f _{R is} generated, and in the same way, the filter component 103b separates out only the blue light in such a stripe image, so that

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the video signal is generated with the frequency fg. The filter component 103a has no influence on light of all colors, except for red, off, and the other filter component 103b is affected the light of no color but blue.

In this case, however, it is possible, instead of the filter ^ 103, to use such an optical filter that the image of an object to be watched in a grid-like pattern (checkered pattern) is projected according to the main color components of the property.

Therefore, the image on the film 105 obtained by a camera constructed as shown in Fig. 1 is converted into a video signal E as theoretically expressed by the following equation:

* R *

(1)

In this equation (1), Iy is a video signal that corresponds to the total visible light, S ^ and Eg are video signals that correspond to red and blue light, k _R and kg are constants depending on the pulse duration (duty cycles) of the strip images ( strip patterns) of the filter components and the spectral sensitivity of the film, and K _R and Kg are

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Constants, depending on the above pulse duration, of the. Spectral sensitivity and the resolving power of the system. To clarify the principles, higher harmonic components of 6o _R and ίο -η have been omitted.

The following is a description in connection with a System for generating color television signals from the thus obtained PiIm given. In Fig. 3, 105 * is a movie to watch through Treatment of the unexposed film 105 receives, and the image on the film 105 * is through a lens 106 on the photoelectric Conversion layer of a pickup tube 30 is projected. 51 is an amplifier for amplifying the output of the pickup tube 50. The pickup tube 50 and amplifier 51 can designed practically the same as those for ordinary monochromatic television cameras. The output of the amplifier 51 unjC matches such a video signal as given by Equation 1 given is.

The output of the amplifier 51 is correspondingly fed to a low-pass filter 52, a band-pass filter 53 with a center frequency f _R and a further band-pass filter 54 with a center frequency ig. The properties of the filters 52, 53 and 54 are shown in FIG. 4 specified. The low-pass filter 52 is used to select the first factor of equation (1) and its output E ₁ is a visual carrier signal as given by the following equation:

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- ίο -

The bandpass filter 53 is used to select the second factor of equation (1) and its output E ₂ 'is a carrier signal as given by the following equation:

t (3)

The bandpass filter 54 serves to pick out the third factor of equation r (1) and its output E, 'is a carrier signal such as it is expressed by the following equation:

(4)

With 56 and 57 detectors are designated, which display and determine the outputs of the bandpass filters 53 and 54. The outputs E ₂ and E _{5 of} the detectors 56 and 57 are compared with the following equations:

E ₂ = K _rEr (5)

(6)

Hit 55 denotes a matrix circuit for calculating the outputs E .. of the low-pass filter 52, given by the equation (2), and the outputs E ₂ and E _{5 of} the detectors 56 and 57, given by the equations (5) and (6) .

In general, E ^ is given by the following equation:

+ bE _G + cE-g (7)

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The signals E _R , E „and En are thus obtained at the output terminals 58R, 58G and 58B of the matrix circuit 55. In equation (7), a, b and c are constants which are dependent on the wavelength sensitivity of the film 105 etc. * . If necessary, it is possible to dispose a broken line optical color filter 106 in the optical path of the camera shown in Fig. 1 to change the values of the constants a, b and c and those of the aforementioned constants K n and Kg .

The principles of the invention are from the foregoing to be understood, but further explanations are given below given.

_{A beat frequency between R} and & i _B often arises at the output of amplifier 51 because of the cross modulation caused by non-linear characteristics of the pickup tube 50, amplifier 51 and the like. Of the components of the beat frequency, a particular component given by the following equation is practically included in the pass band of the low pass filter 52 shown in Fig. 4, and this beat B frequency component appears in the output of the low pass filter 52 in form of a superfluous signal.

g- U) _H ) t (8)

Where K is a constant. In order to avoid this superfluous signal, a beat frequency generator 19 is provided the outputs of the bandpass filters 55 and 54, namely the carrier

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components E ₂ ¹ and E, 'expressed by equations (3) and (4), thereby generating a visual frequency component as follows:

- KE ₁₁ E ₂ COs (^) ₃ - £ 0 _Ä ) t. (9)

The beat output thus generated is added to the output of the low-pass filter 52, whereby the superfluous signal that is im Output of the low pass filter 52 included and given by the equation (β) is given, is deleted.

The following is an embodiment of the bandwidth of a Video signals that are reduced to their color components.

It is known that the visible color properties have a maximum resolution for monochromatic information, and that the resolution varies with the color value of the color information. If a bandwidth of 3 IiHz, the widest in Jig, 4 »is applied to the filter 52 to obtain the signal S _{1 of} the equation (2) from the signals of the equation (1); Furthermore, a bandwidth of 2 MBz (+ 1 JiHz) is given to the filter 53 to obtain a red signal with a relatively high resolution, namely the signal E ₂ ^{1 of the} equation (3), and if a bandwidth of 1 l & z (+ 0.5 MHz) is applied to the filter 54 in order to obtain a blue color coaponent voltage with a relatively low resolution, the center frequencies are correspondingly

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sequences f _ß and fg of the filters 53 and 54.4 MHz and 5.5 MHz.

Fig. 5 shows the case where - when the total bandwidth is 6 MHz - a high apparent resolution in the same way as in Pig. 4 can be achieved, that is, the upper limit frequency of the band of the filter 52 is raised approximately to the center frequency fa of the filter 53, and the bandwidth of the filter 52 is set to about 4 AlHz. The bandwidths of the other filters 53 and 54 are the same as in FIG. 4. It is evident that the bandwidth of the filter 52 is expanded, while the bandwidth of the filters 53 and 54 can be narrowed further, so that in particular the suppression the color information of details is effected.

It is advisable to increase the apparent resolution by one of the band of filter 52 in the band of filter 53, as above described with reference to FIG. 5, overlap below. However, the component of the filter 53 in the output voltage E ^ of the filter 52 mixed, whereby because of f «in the reproduced picture a stripe pattern appears and becomes a harmful or disadvantageous component.

Referring to Figs. 6 and 7, there are means for eliminating such a harmful component described. In Fig. 6, an embodiment is shown in which the circuit according to Fig. 3 shows an additional circuit for preventing the occurrence of

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has harmful component. In this figure are parts that match those correspond to Fig. 3, provided with the same reference numerals, so that no further explanation is necessary. The one shown Pick-up tube 50 has a horizontal deflection lug 81. The horizontal deflection coil or deflection coil 81 is provided with a horizontal deflection output circuit 82, as usual, connected to that of a horizontal synchronizing signal circuit 83 synchronously is controlled with this. 84 is a vertical synchronizing circuit or a synchronizing circuit for an unillustrated one vertical deflection winding of the pick-up tube 50.

To eliminate the harmful component that is due to fji from the Stripe pattern arises and appears in the reproduced image, a circuit 85 is provided which is through the The output of the vertical synchronization signal circuit 84 is controlled and generates a square current shown in Fig. 7B. This output of the circuit 85 is given to the horizontal deflection winding or coil 81, for example, which corresponds to the horizontal Deflection output of the circuit or circuit 82 is superimposed. The square wave signal is explained in the following description.

In Fig. 7A the output current is shown in the form of a sawtooth current 86, which is generated by the vertical deflection output circuit (not shown) by the vertical sync signal circuit 84 is controlled, to the vertical deflection winding

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will lead. The period T of the sawtooth current is equal to that of one field of the display device or the pickup tube. The square-wave current 87 generated by the circuit 85 as shown in Fig. 7B changes "on ^R " and "off" in every field period 2 of the vertical synchronization signal In the course of development, the image of a field is shifted in the horizontal direction. Therefore, the amplitude of this rectangular current is determined in such a way that the stripe patterns appear sandwiched between neighboring fields, which are shifted horizontally by approximately half a division of the stripe images That is, if the stripe patterns 88 as shown in FIG The following field is determined in such a way that the stripe images 83 * appear between adjacent stripes 88 as shown in Fig. 8B. The shift distance is usually chosen so that the stripes 88 'of the following one field appear between the adjacent stripe images 88 of the previous field. Thus, the positions of the stripe images of each field in the reproduced image are not fixed for an observer, and thus the effect of the stripes can be effectively reduced. The above explanations were given old with reference to FIGS. 6 to 8 in connection with the circuit srar generation of the square-wave current,

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signal is controlled. However, you can get the same results can also be achieved in another way, i.e. the circuit 85 for generating the pike-corner current is through the horizontal Synchronizing signal circuit 83 is controlled so that a square wave current is generated. The period of the square wave current obtained in this way is brought into agreement with that of the horizontal deflection current. Its amplitude is determined that it has such a value as mentioned above, and its phase is reversed every vertical deflection period. Besides, it is possible to give a square wave current to another winding arranged around the pickup tube 50 without being limited to the case in which the right current is routed to the horizontal deflection winding. Venn also the receiving tube from is electrostatic deflection type, the aforementioned unnecessary component can be substantially cut out by applying the square wave voltage to a deflector plate. Ss is also possible to convert a square wave to a To lead playback device, namely the catcher eye, without being limited to the above case, where the square-wave current is placed on the deflector of the receiving tube.

Means are also provided to cut off the variations in f _R and fg, which are added or received by the filters 53 and 54 in FIG. 3. By variations in the horizontal scan amplitude or linearity of a signal from the horizontal deflection output circuit 82 in FIG. 6 will be

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Sissies of the frequencies f _R and f _B caused by the signals applied to the filters 53 and 54. As a result, the frequencies exceed the bandwidths of the filters 53 and 54, or the properties become unequal within their bandwidths. This results in a distortion or distortion of the reproduced image and a deterioration in image quality. In order to avoid this, for example, in the circuit of FIG. 6 the output of any one of the filters 53 and 54 (in this figure that of the filter 54) is given to a frequency discriminator 89, as shown in FIG. 9, whereby the deviations in the frequency f _{B are} discriminated or filtered out. The eo filtered output is then routed to the horizontal deflection coil 81 of the pickup tube 50, for example. In this case, it is of course possible to apply the output of the die-discriminator 89 to the horizontal synchronization circuit or to the horizontal deflection output circuit 82. The output of the discriminator is, of course, directed in such a direction that the deviations in the frequency component obtained in the pickup tube are eliminated.

Other remedies may be veaifcidated instead of this to achieve this purpose, i.e. the deviations in the frequency components which are given to the filters 53 and 54 are, as described above with reference to FIG. 9, filtered out, whereby the electrical constants of the filter 53 and / or the Filters 54 can be changed. As a result, the center frequency of the filter 53 and / or the filter 54 is changed accordingly the shift in the center frequency of the signal sent to the

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Filter 53 and / or the filter 54 is given, and thus the signal can be guided precisely over the entire bandwidth. Is It is therefore possible to use the filter 53 and / or the filter 54 with a variable element such as a variable inductor or a capacitor, as shown in Fig. 10, and its movable element is controlled by the output of the discriminator s controlled. In some cases, the band of filter 52 can be made variable.

In Fig. 11 there is shown an example of a photographic camera of the invention different from that of Fig. 1. In Fig. 1, the plane of the optical filter 103 is practically in close contact with the sensitive surface of the film 105 through the relay lens 104. Therefore, the film 105 can be placed in direct contact with the optical filter 103 immediately behind it, as shown in Fig. 11, so that the relay lens 104 can be omitted. Further, it is apparent that by using an image optical transmission device such as an optical fiber, the film 105 is attached to a such a point can be arranged, which is the same as that immediately behind the filter 103 or corresponds. Thus can the relay lens 104 shown in Fig. 1 can be omitted, thereby simplifying the entire photographic camera apparatus can be.

Fig. 12 shows an optical filter 105 "which, in place of the above mentioned optical filter 103 can be used. How out

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As can be seen from the figure, the optical filter tier has different ones Band filter elements W, R, G and B, which are consecutively in one Kind of those after Pig. 2 are arranged, wherein the band filter elements W can transmit visible light of all colors, while the band filter elements R light of a color ^ e.g. red, the band filter elements G can transmit light of a different color, for example green, and the band filter elements B can transmit light of a color different from those mentioned above, for example blue.

Fig. 13 shows a block diagram of a device for generating Color video signals for use with a film on which real images of an object to be watched are recorded and the stripe patterns from, for example, an optical filter, as previously described. With 106, 50 and 51 1st a lens, denotes a pickup tube and an amplifier which are substantially the same as those in FIG. With 105 * "is denotes a film which has a real image of an object to be transferred and the stripe image of the optical filter 105 ". In this case, the amplifier 51 produces an output, as shown in FIG. 14, which consists of time division signals Ey ', E ^', Sg * and Ed * is composed, corresponding to the band filter elements V, R, G and B of the optical filter 105 "as shown in FIG.

In Fig. 13 a 60 W _e is llenformtrennschaltung, the * disconnects the output Sy of the type shown in Fig. 14 waveform, and generates a waveform of Fig. 15A, as well as a Synohronisierungflsig-

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isolating circuit of a conventional television receiver. 61 is a multiphase pulse generator to which the Pig. 15A is given and which generates gate pulses as shown in FIGS. 15B, 15C and 15D. These impulses are circled accordingly to gate 62, 63 and 64, whereby these are opened. At the same time, the output of the amplifier 51, which is given accordingly, is displayed. This means that the outputs of the fork circles 62, 63 and 64 are proportional to those in Pig. E _R ⁽ , Ε _& · and Eg. ¹ .Dh, at terminals 65R, 65G and 65B outputs are obtained in relation to the aforementioned outputs EL ^f > E « ¹ and Eg ^f , thereby achieving the desired purpose .

In the above device, however, there is the possibility that

detail
when mrtaduck components, which are equal to the pitch of the band filter, are present in the image of an object to be viewed from television, a moire pattern is generated in the image displayed on the receiving screen. In order to avoid this, an optical element is preferably arranged in the light path between the optical filter and the object to be watched, which is able to limit the resolving power for the object and which can be, for example, a glass plate which has a suitable rough surface Has. '

In order to change the ratio of each color component of the real image focused on the film 105, it is possible to use a device to change the pulse duration (duty cycle) of the strip image filter

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(stripe-patterned filter).

In Pig. 1 is the division of the filters, which are arranged in front of or on the PiIm 105, chosen so that the center frequencies of the band-pass filters 53 and have the aforementioned values. However, in some cases it is necessary to change the bandwidths and the center frequencies. This can be done by changing the pitch of the optical filter be performed. In practice, however, it is difficult to adjust the division of the optical filter as desired at any point in time and it is completely impractical to change the division by small amounts. That is why funds are needed to change the center frequencies of the bands without changing the pitch of the optical filter. For this purpose the filter is like this arranged so that the longitudinal direction of the band filter elements differs from that shown in Fig. 16Δ relative to the direction the horizontal scanning of an electron beam as shown in Fig. 16B. In such a case the relative speed is the horizontal scanning by the designated 90 Electron beam different from that of Fig. 16A, and if this difference corresponds to the center frequency of the band-pass filter is predetermined, the desired purpose is achieved.

17 shows another example of the device according to the invention for the generation of color signals, in which with the reference symbols 105 '»106, 50, 51, 53, 54, 55, 56 and 57 the same Elements such as those indicated in FIG. 12. The feature of the device of FIG. 17 is that a supplementary circuit

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52 · is provided. It is evident that the bandwidth of the Amplifier 51 includes that of filters 53 and 54 as shown in FIG. When the outputs of filters 53 and 54

are given by equations 3 and 4, these exits become given to the supplementary circuit 52 * before they are fed to the detectors 56 and 57, and the outputs and the one of the amplifier 51 given by the equation (1) are summed up. At this point the polarities will be and the amplitudes of the outputs of the bandpass filters are determined in such a way that that the corresponding components contained in the outputs of the filters 53 and 54 and the amplifier 51, namely the second and the third factor of equation (1) can be deleted or deleted. Thus, the supplementary circuit 52 * fulfill the function of the low-pass filter according to FIG. 3, and further one can obtain frequency components that make up the pass band the filters 53 and 54 exceed so that the resolving power can be increased. It is natural in this example possible to use various additional devices which have been described in connection with the system of FIG.

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Claims (1)

U62843 Claims (Photographic camera with an optical system for focusing of a real image of an object to be watched TV, with an unexposed monochromatic film for recording the focused real image obtained through the optical system of the object was generated, characterized in that optical means are seen in the light path or the light path to To project images (patterns) onto this unexposed monochromatic film according to the main color components of this Object simultaneously with the recording of the real image of the object. . Photographic camera with an optical system for focusing a real image of an object to be viewed from television, an unexposed monochrome film for recording the focused real image generated by the optical system of the object, characterized in that an optical Filter is arranged in the light path so that strip images (stripe patterns) - different filing, depending on the main color components of the object, recorded on the unexposed monochromatic film at the same time as a 4-way recording of the real image of the object. . Photographic camera according to Claim 1, characterized in that that another color filter, which is uniform over its entire surface 809811/0626 is moderately colored, is arranged in the light path in order to reflect the proportions of the corresponding main color components of the object, that are recorded on the monochromatic film. A photographic camera as claimed in claim 1, characterized in that an optical element is provided in the light faucet To delimit details of the object, thereby eliminating a moiré pattern that appears on the monochromatic PiIm between, the Stripe image of the optical! Filter and the details of the object was generated. Photographer! See camera according to claim 1, characterized in that that the optical filter has a first and a second filter component have that further the first filter component has first and second band filter elements which are arranged alternately that furthermore, the second filter component has third and fourth band filter elements which are arranged alternately, and that the first Band filter elements transmit light of practically all colors can, and the second band filter elements light from at least a color, and that the third band filter elements the same as the first band filter elements are, and that finally the fourth band filter elements are able to collect or receive light of a color that is different from that * that of the second bandpass filter elements was caught or recorded. 809811/0626 U62843 6. The photographic camera of claim 1, "wherein the optical The filter has first, second, third and fourth band filter elements which are arranged alternately with one another, characterized in that that the first band filter elements can transmit light of virtually any color, and any of the second, third and fourth band filter elements can transmit light of a color different from that which has been cut or separated from the other elements. 7. Photographic camera according to claim 1, characterized in that that the effective length of each division of the stripe image is changed by changing the direction of the band filter elements of the optical filter, 4 * e-with respect to the scanning direction of the electron beam is changed. 8. Photographteche camera according to claim 1, characterized in that that the optical system comprises an objective lens and a relay lens, that further the optical filter in the plane is arranged on which the real image of the object is focused by the objective lens, and that the monochromatic unexposed film is arranged in the plane on which the real image of the object is on the optical Filter is focused into an image through the relay lens. 809811/0626 9. Monochromatic film, characterized in that on it Stripe images with different pitches are recorded, depending on the main color components of a television to watch Object, and that also a real image on the PiIm of the object is recorded. 10. Photographic camera according to claim 1, characterized in that that the monochromatic unexposed JPiIm in contact with the back of the optical filter is arranged. 11. Photographic camera according to claim 1, characterized in that that the monochromatic unexposed PiIm is arranged behind the optical .Filter, and that between a fiber optic is arranged. 12. Photographic camera according to claim 4, characterized in that that a color filter is arranged in the light path. 13. Photographic camera according to claim 4, characterized in that that an optical element is arranged in the light path. 14. Photographic camera according to claim 5, characterized that a color filter is arranged in the light path. 15. Photographic camera according to claim 5, characterized in that that an optical element is arranged in the light path. 809811/0626